With the mercury topping 35 degrees Celsius across Japan — and similar temperatures expected through August — both the government and meteorologists are warning of an elevated risk of heatstroke.

The government has already issued alerts from Tokyo to Okinawa, asking people to drink plenty of water and avoid going outdoors to prevent heat exhaustion.

In cases where a person is suspected of having heatstroke, the Environment Ministry’s guidelines explain what steps and first-aid measures to take, depending on the symptoms.